All numeric concepts that have any meaning whatsoever have units/“dimensions”. Probability is in units of possible outcomes. If your chances are affected non-li

All numeric concepts that have any meaning whatsoever have units/“dimensions”. Probability is in units of possible outcomes. If your chances are affected non-linearly, you’d express that (chance of death per inch of penetration). No percentages are unitless. If they were, you could substitute them without consequence, like applying an interest rate percentage in place of a mortality rate pecentage or an alcohol-to-water percentage. Angles, exponents, counts all fit in units, just more complex unit expressions.